Wing FTP Server Improper Neutralization of Null Byte or NUL Character Vulnerability (CVE-2025-47812)
Severity: critical · Patch status: unknown · Since 2025-07-14 · CVE-2025-47812
Wing FTP Server contains an improper neutralization of null byte or NUL character vulnerability that can allow injection of arbitrary Lua code into user session files. This can be used to execute arbitrary system commands with the privileges of the FTP service (root or SYSTEM by default). CISA added CVE-2025-47812 to its Known Exploited Vulnerabilities catalog on Jul 14, 2025, which means attackers are exploiting it in the wild.
What to do
- Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- US federal agencies must remediate by Aug 4, 2025 (BOD 22-01); treat that as the outer limit.
Sources
All live incidents on Threat Watch
